User manual

5-8
Stress Test
Frame Loss
Chapter 5
Frame Loss
Test results are shown as Frame Loss percentage versus percent of
maximum line speed for each packet size. The test starts at 100% of the
line speed and steps down in selectable step sizes until two consecutive
steps have 0% frame loss which ends the test. Dashed lines are
displayed for line speeds not tested when the 0% frame loss is met.
In the first example below, the test shows 0% loss at both 100% and 90%
of the maximum line speed which ended the test. Everything below 90%
will also have no frame loss and is not tested. The line speeds less than
90% have dashed lines showing that frame loss rate was not tested.
In the second example below (based on the previous microwave link
test),there was 100% frame loss down to 30% of the maximum line rate.
Some frames were transmitted correctly from 30% to 20%. Between 20%
and 10% transmission reached 0% frame loss. 0% frame loss was
expected at about 15.5% because of the 155Mbps microwave link. More
accurate results can be attained by changing the Frame Loss setup to a
smaller step size such as 1%.